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Eliwell EWPC 961/S User Manual

Eliwell EWPC 961/S
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2EWPC 961/S 7/2000 ing
LSE: Lower SEt.
This is the lower limit below which the user
cannot change the setpoint.
HSE: Higher SEt.
Similar to “LSE”, however setting an upper
limit for the setpoint.
CAL: CALibration.
Temperature read-out offset to allow for a
fixed adjustment up or down due to probe
location, if desired.
cPP: compressor Probe Protection.
Select compressor relay status in case of
room probe defect.
oF = compressor OFF in case of probe de-
fect;
on = compressor ON in case of probe de-
fect.
ctP: compressor type Protection.
Select the type of (short-cycle) protection
best suited for the compressor; the actual
delay time is programmed with the next
parameter.
nP = no Protection;
don = delay on start: delay applies when
relay is energized;
doF = delay at switching oFf. Delay after
stop, i.e. time between stop and subse-
quent start;
dbi = delay between two successive starts.
Limits the number of start-ups per hour.
cdP: compressor delay Protection.
The time delay - in minutes - applicable to
the previous parameter “ctP”.
dct: defrost count type.
dF = digiFrost
®
: defrost starting time (“dit”)
is calculated based on accumulative com-
pressor running time;
rt = real time: defrost initiation frequency is
based on real time. Time between defrost
starts is always the same;
SC = Stop Compressor: a defrost cycle is
activated each time the compressor stops;
Fr = Free (the compressor relay has no re-
lation with the defrost functions and con-
tinues to regulate on Setpoint).
dit: defrost interval time.
Defrost initiation frequency in hours.
dEt: defrost Endurance time-out.
Defrost safety limit, expressed in minutes.
Defrost cycle is terminated, regardless
whether fully completed.
ddL: defrost display Lock.
Select whether or not to lock in the actual
box temperature display during a defrost.
n = no: during defrost the actual box tem-
perature is displayed;
y = yes: the temperature displayed at the
start of a defrost is locked in and does not
change during this cycle;
Lb = Label: during the defrost the label
“dEF” is displayed to indicate a defrost is in
progress.
NOTE: with the “y” and “Lb” selection, the
display remains locked until the box tem-
perature is pulled down again and reaches
setpoint value.
HAL: Higher ALarm.
LAL: Lower ALarm.
AFd: Alarm (Fan) differential.
PAO: Power-on Alarm Override.
dAo: defrost Alarm override.
dPo: defrost (at) Power on.
Selects whether the system should go
through a defrost cycle at start-up (or after
a power failure).
n = no;
y = yes.
doh: defrost offset.
Time delay of defrost start, expressed in
minutes.
dEA: dEvice Address.
To select the (address) label of the device in
relation to the supervisory system.
FAA: FAmily Address.
To select the (family) label of the device in
relation to the supervisory system; further
as “dEA”.
tAb: tAble of parameters.
This shows the configuration of the para-
meters as set in the factory; can not be
modified (for factory identification and di-
agnostic purposes only).
INSTALLATION
The instrument is designed for flush panel
mounting. Insert the unit through a
71x29 mm panel cut-out and affix with the
U-bracket supplied. The ambient tempera-
ture around the instrument should be kept
between –5 and 65 °C (23…149 °F).
CONNECTIONS
EWPC 961/S
6 7 8 9
POWER SUPPLY
5
10
1 2 3
+
RS-485
compressor
thermostat
PTC probe
DEFAULT SETTINGS - STANDARD MODELS
Parameter
diF
LSE
HSE
CAL
cPP
ctP
cdP
dct
dit
dEt
ddL
HAL
LAL
AFd
PAO
dAo
dPo
doh
dEA
FAA
tAb
Description
diFferential
Lower SEt
Higher SEt
CALibration
compressor Probe Protection
compressor type Protection
compressor delay Protection
defrost count type
defrost interval time
defrost Endurance
defrost display Lock
Higher Alarm
Lower Alarm
Alarm (Fan) differential
Power-on Alarm Override
defrost Alarm override
defrost (at) Power on
defrost offset
dEvice Address
FAmily Address
tAble of parameters
Range
1…15
–99…HSE
LSE…99
–20…20
oF / on
nP / don / doF / dbi
0…15
dF / rt / SC
0…31
1…99
n / y / Lb
1…50
1…50
1…50
0…10
0…10
n / y
0…59
0…14
0…14
/
Unit
°C / °F
°C / °F
°C / °F
°C / °F
flag
flag
minutes
flag
hours
minutes
flag
°C / °F
°C / °F
°C / °F
hours
hours
flag
minutes
number
number
/
Default
2
–55
40
0
oF
nP
0
rt
6
30
y
50
50
1
10
10
n
0
0
0
/

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Eliwell EWPC 961/S Specifications

General IconGeneral
BrandEliwell
ModelEWPC 961/S
CategoryController
LanguageEnglish

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